The compound which gives the most stable carb | vedclass

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Question

(B) Dehydration of alcohols proceeds via the formation of a carbocation intermediate. The stability of carbocations follows the order: $3^\circ > 2^\c

Vedclass · Accepted Answer

$CH_3-C(CH_3)(OH)-CH_3$

Vedclass · Answer

(B) Dehydration of alcohols proceeds via the formation of a carbocation intermediate. The stability of carbocations follows the order: $3^\circ > 2^\circ > 1^\circ$. $a.$ $CH_3-CH(CH_3)-CH_2OH$ forms a $1^\circ$ carbocation: $CH_3-CH(CH_3)-CH_2^+$. $b.$ $CH_3-C(CH_3)(OH)-CH_3$ forms a $3^\circ$ carbocation: $(CH_3)_3C^+$. $c.$ $CH_3-CH_2-CH_2-CH_2OH$ forms a $1^\circ$ carbocation: $CH_3-CH_2-CH_2-CH_2^+$. $d.$ $CH_3-CH(OH)-CH_2-CH_3$ forms a $2^\circ$ carbocation: $CH_3-CH^+-CH_2-CH_3$. Since the tertiary $(3^\circ)$ carbocation is the most stable,tert-butyl alcohol (option $b$) is the correct answer.

The compound which gives the most stable carbocation on dehydration is:

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